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Update N64.ino

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Included new strcmp function to ignore case when comparing checksums.
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Modman 2019-09-17 13:01:05 -07:00 committed by GitHub
parent 4c46ebc4ef
commit 1128720bdd
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 11 additions and 1 deletions
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Cart_Reader/N64.ino
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@ -1188,6 +1188,16 @@ static const uint32_t crc_32_tab[] PROGMEM = { /* CRC polynomial 0xedb88320 */
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
}; };
// improved strcmp function that ignores case to prevent checksum comparison issues
int strcicmp(char const *a, char const *b)
{
for (;; a++, b++) {
int d = tolower((unsigned char)*a) - tolower((unsigned char)*b);
if (d != 0 || !*a)
return d;
}
}
// look-up the calculated crc in the file n64.txt on sd card // look-up the calculated crc in the file n64.txt on sd card
boolean searchCRC(char crcStr[9]) { boolean searchCRC(char crcStr[9]) {
boolean result = 0; boolean result = 0;
@ -1209,7 +1219,7 @@ boolean searchCRC(char crcStr[9]) {
} }
// Check if string is a match // Check if string is a match
if (strcmp(tempStr1, crcStr) == 0) { if (strcicmp(tempStr1, crcStr) == 0) {
// Skip the , in the file // Skip the , in the file
myFile.seekSet(myFile.curPosition() + 1); myFile.seekSet(myFile.curPosition() + 1);